Strap-tipping machine.



A. R. MONTFERRAND. STRAP TIPFING MACHINE. ABPLICATION FILED M\Y2Bl |918.

Patented Oct. 8

waw

- sereine remi@ @Wm- ARTI-IUR R. MONTFERRANI), OF BOSTON, MASSACHUSETTS, ASSIGNOR TO MEADER ENGINEERING AND MACHINE COMPANY, OF BOSTON, MASSACHUSETTS, A COR- roRATIoN oF MASSACHUSETTS.

STRAP-TIPPING MACHINE.

To all whom t may concern:

Be it known that I, ARTHUR R. MONTFER- RAND, a citizen of the United States, residing at Boston, in the county of Suffolk and State of` 'Massachusetts have invented new and useful Improvements inl Strap-Tipping Machines, of which tbe'following is a specification.

` This 'invention ha'sfor its object to provide a machine for applying metal tips to fiat 'straps or strips oft-eXtile fabric, Vthe tip, being, before its application 'to the strap, a metal cup of elliptical shape inv cross section, and the'- strap endbeing compressed edgewise to permit its insertion in the tip, the tip being compressed sidewi'se after the insertion ofA the strap-end, and thus provided with fiat parallel sides between which the strap-,end is 'securely clamped.

The invention is vembodiedxina"strapi tipping machine comprisinga' press including a xed b'ed and movable' platen, said bed and platen being adapted to flatten an elliptical tip applied to a compressed strap-end, 25

a mold including a fxedmemberhaving a cavity formed 'to receive and bear on two sides 'and one edge of the strap-end, and a plunger movable lin said cavity and Yadapted to bear 'on the opposite edgeof the strap-end and meansfor imparting 'movement from the'platen to the plunger,V the mold being adaptedY to reduce the kwidth of'a strapend inserted in saidcavity, and thus permit the 1 insertion of the strap-'end inthe tip'bjefore the latter is 'flattened Of the accompanying drawings forming a part of this'specification,'-^" i F igure'l is a'v front elevation of a straptipping machine embodying the invention.

1g. 2is an end view ofthe same, a portion being shown in section Online 2-2 of Fig.1. f Fig. Sis a sideview of anend portion of a strap before its compression.

Fig. 4 is a view similar to Fig. 'show- 'ingthe strap-'end compressed. "Fig is aA view similar to Fig. 4, showing a compressedstrap-end inserted inaY partially formed tip, the latter beingelliptical ./..,A,

in cross section. y

' Fig. 6zis `a view similar to Fig. 5, showing thev tip" flattenedand clamped to the strapnd., n.

Fig. lisa-Section on Aline Z-,7. of Fig. 5.A

' Specification of Letters Patent.

Patented Oct. 8, 1918.

' Application Ied May 28, 1918. Serial Ne. 237,039.

FigQVS is a section on line 8*8 of Fig. 6. The same reference characters vindicate the same parts in all of the figures.A

In the'drawings, 12 represents a fixed press bed attached to a suitable frame 13 and having a Hat top face. 14 represents Va platen which vis movable toward and from the bed l2 by any suitable means. Ashere shown, the platen is reciprocated by means ofv an eccentric l5 attached to a driven shaft 16 and embraced'by astrapfl? on a link' or rod 18 attached' to the platen.

The Vthrow of the platen is such that it approaches the bed suliciently to change the form of a tip 19, containing ac ompressed strap-end "20, from the ellipticalform shown by Fig. 7, to the liattened form shown by Fig.' Y Y i Associated with the press is a-`1nold adapted to'compress theY strap-end and impart thereto the form shown by Fig. 4. Said mold' comprises a fixed member 21 attached by bolts22 to a' Xed ear 23- projecting from one end of the bed 12, said member 'containinga mold cavity25 formed to receive; and bear on two sides and one edge of a flat strap-end shown by Fig. 3, and a plunger 26 movable in said cavity and adapted to bear on the opposite edge of thev strap-end and form a' reduced portion 20 shown by Fig. l'. The member 2l`is preferably a block having a parallel Ysided slot formed in its outer end and provided with a'liange 21a attached by bolts 27, and forming Vone edge fa four sided mold cavity, the-other three edges of which are fo-rmedby the sides and inner end of the slot-25. The plunger 26 has a close slidingt inthe mold cavity, and is reciprocated therein preferably by the means next described.V

29 represents a lever connected'at one end with the frame '13`by a' fulcrum stud 30, and at the opposite end with the plunger 26 by a pivot pin 31.l vThe lever 29 is interposed between the Yfixed ear 28 on the bed 12v and' a movable/ear 32 attached tothe platen '14 andl overhanging the ear 23 and the lever. A spring 83 bearing at Vone end on theblock or mold member 21, land at the opposite end lon the lever 29,'presses said leveriupward and holds it in yielding contact with*V the platen Yar1n-32- When the platen -is" reciprocated theilever 29 is oscillated` cbnjoin'tly Vby the arm,F '32 Vand fthe spring 83, and the plunger 26 is reciprocated by the lever.

The operation is as follows:

The platen 14 and plunger 26 being raised, the operator inserts a strap-end in the con- A dition shown by Fig. 3, in the mold cavity between said sides. The change of form imparted to the tip and strap-end by the press may be seen by comparing Fig. 5 with Fig.

' 6,'and Fig. 7 with Fig. 8.

f interposed between The platen ear 32 vis preferably adjustable to vary the extent to which the plunger 26 is depressed, and thus adapt the machine to straps and tips of different sizes. To this end, the ear 32 may be provided with an adjustable stop member 32a, formed as a screw adjustably engaged with the ear 32, and bearing at its lower end on the lever 29, thesaid screw being maintained at any desired adjustment by means of a nut 32". To insure close contact between'the inner edge of the plunger and the wall of the slot which forms the inner end ofthe mold cavity 25,1 provide a biasing spring 35 an upwardly projecting Yarm 26a on the plunger 26 and an abutment'36 on the lever 29, said spring exerting pressure in the direction of the arrow 37 (Fig. 2) on the arm 26a, and holding the inner edge of the plunger in close contact with the inner wall 0f the mold cavity.

The ear 23, the portion of the member A21 bearing thereon, and the bolts 22 constitute an embodiment of means for securing the member21 to the press bed 12 in a` position offset from the acting surface ofthe bed. The lever 29,'arm'32, and springV 33 constitute an embodiment of means offsety from the acting surface of the platen 14 for imparting movement from the platen ,to the plunger 26. The mold is therefore adapted to act on and reduce a strap-end located outside the path of movement of the platen, and the press is adapted to compress a partially formed tip 19 applied tothe reduced platen,

end of the strip and located on the press bed.

I claim: Y

1. A strap-tipping machine comprising a press including a fixed bed and a movable a mold including a fixed member having a cavity formed vto receive and bear on two sides and one edge of a flat strapend, anda plunger movable' in said cavity and adapted to bear on the opposite edge of said strap-end, means for securing said fixed member to the press bed in a, position offset from the acting surface of the bed, and means odset from the acting surface of the platen for imparting movement from the platen to the plunger, the mold being adapted to act on and reduce a strap-end located outside the path of movement of the platen, and the press being adapted to compress a partially formed tip applied to the reduced end ofthe strip and located on the press bed.

2. A strap-tipping machine, comprising a press including a fixed bed and a movable laten, a mold including a xed member attached to the platen and having a cavity formed to receive and bear'on two sides and one edge of a flat strap-end, andl a plunger movable in said cavityand adapted to bear on the opposite edge end,a lever fulcrumed at onevend to a fixed support and pivoted at the opposite end to said plunger, an arm carried by the platen and bearing on said lever, and a lever-raising spring holding the lever in yielding contact with said arm, the lever being 0scillated by the platen and spring, and the plunger reciprocated by the lever. n

3. A strap-tipping machine comprising a press including a `fixed bed and amovable platen, a mold including a fixed member attached to the platen and having Va cavity formed to receive and. bear on two sides and one edge of a flat strap-end, `and a plunger movable in said cavity and adapted to bear on the opposite edge of said strap-end, a lever fulcrumed at one end to a fixed sup port and pivoted at the oppositeend to said plunger, an arm carried by the platen and bearing on said lever, a lever-raising spring holding'the lever in yielding contact with said arm, the lever 'being oscillated by the platen and spring, and the plunger reciprocated by the lever, the plunger being provided with an upwardly projecting arm, and a biasing spring interposed between said arm and an abutment on the lever, whereby the inner edge of the plunger is pressed against .the inner edge of said cavity. 4. A strap-tipping machine comprising a press including a platen having a fixed ear 'at one end, and a movable platen having an ear overhanging said fixed ear, a mold including a fixed member attached toA said fixed earand having a-cavity formed to receive andbear on two sides and one edge of a flat strap-end inserted in said cavity, and a plunger movable in said cavity and adapted to bear on the opposite edge of the strapend, a lever interposed between said ears, fulcrumed at one end to a fixed support, and pivoted at the opposite end to said plunger, and a lever-raising spring seated atone end onsaid fixed ear, and at the opposite end on of said strapsaid lever and holding the latter in yielding Contact with said movable ear, the lever being osoillated by the platen and spring, and the plunger reciprooated by the lever.

5. A strap-tipping machine comprising a press including a platen having a fixed ear at one end, and a movable platen having an ear overhanging said fixed ear, a mold including a fixed member attached to said fiXed ear and having a cavity formed to receive and bear on tvvo sides and one edge of a flat strap-end inserted in said cavity, and a plunger movable in said cavity and adapted to bear on the opposite edge of the strap-end, a lever interposed between said Copies of this patent may be obtained for ve cents each,4 by addressing the ears7 fulerulned at one end to a Xed support, and pivoted at the opposite end to said plunger, and a lever-raising spring seated at one end on said fixed ear, and at the opposite end on said lever and holding the latterin yielding Contact With said movable ear, the lever being osoillated by the platen and spring, and the plunger reciprooated by the lever, the said movable ear being provided With an adjustable stop member bearing on the lever.

In testimony whereof I have aiiXed my signature.

ARTHUR R. MONTFERRAND.

Commissioner of Patents,

Washington, D. C. 

